Modulation of coherence and polarization using liquid crystal spatial light modulators.
Andrey S. Ostrovsky,Gabriel Martínez-Niconoff,Victor Arrizón,P. Martinez-Vara,Miguel A. Olvera-Santamaría,Carolina Rickenstorff-Parrao +5 more
TLDR
In contrast to a similar technique analyzed by Shirai and Wolf, this method provides a wide range simultaneous modulation of coherence and polarization of electromagnetic fields, employing two crossed zero-twelve nematic liquid crystal spatial light modulators.Abstract:
We propose a method for modulation of coherence and polarization of electromagnetic fields, employing two crossed zero-twisted nematic liquid crystal spatial light modulators. In contrast to a similar technique analyzed by Shirai and Wolf [J. Opt. Soc. Am A, 21, 1907, (2004)] our method provides a wide range simultaneous modulation of coherence and polarization. The dependence of the obtained results on different definitions of electromagnetic coherence is considered.read more
Citations
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Propagation characteristics of partially coherent beams with spatially varying correlations
Hanna Lajunen,Toni Saastamoinen +1 more
TL;DR: It is shown that mathematically simple modifications in the coherence function of conventional Gaussian Schell-model beams lead to partially coherent fields with extraordinary free-space propagation characteristics, such as locally sharpened and laterally shifted intensity maxima.
Journal ArticleDOI
Experimentally generating any desired partially coherent Schell-model source using phase-only control
TL;DR: In this article, a phase-only liquid-crystal spatial light modulator (SLM) was proposed to control both the phase and amplitude using a single SLM, thereby making the amplitude filters unnecessary.
Journal ArticleDOI
Generation of vector partially coherent optical sources using phase-only spatial light modulators
TL;DR: In this article, the authors control both shape and coherence using liquid-crystal spatial light modulators, and can produce two different classes of PCBs using the same simple optical setup.
Journal ArticleDOI
Computational approaches for generating electromagnetic Gaussian Schell-model sources.
TL;DR: This work enables one to design an electromagnetic Gaussian-Schell model source with pre-defined characteristics for wave optics simulations or laboratory experiments.
Journal ArticleDOI
Experimental generating the partially coherent and partially polarized electromagnetic source.
Andrey S. Ostrovsky,Gustavo Rodriguez-Zurita,Cruz Meneses-Fabian,Miguel A. Olvera-Santamaría,Carolina Rickenstorff-Parrao +4 more
TL;DR: The technique for generating the partially coherent and partially polarized source starting from the completely coherent and completely polarized laser source is proposed and analyzed and the efficiency of this technique is illustrated.
References
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Unified theory of coherence and polarization of random electromagnetic beams
TL;DR: In this article, a unified theory of coherence and polarization of random electromagnetic beams is presented, which brings out clearly the intimate relationship which exists between these two phenomena and which makes it possible to predict the changes in the state of polarization of a partially coherent electromagnetic beam on propagation.
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Theory and design of the liquid crystal TV as an optical spatial phase modulator
Bahaa E. A. Saleh,Kanghua Lu +1 more
TL;DR: In this article, an expression for the complex amplitude transmittance of the liquid crystal TV (LCTV) and verified experimentally was derived for spatial phase modulation with good linearity, high transmission efficiency, and small intensity distortion.
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Theory of partially coherent electromagnetic fields in the space-frequency domain.
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Self-organizing optical neural network for unsupervised learning
TL;DR: It is shown that the optical neural network is capable of performing both unsupervised learning and pattern recognition operations simultaneously, by setting two matching scores in the learning algorithm by using a slower learning rate.
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Propagation invariance and self-imaging in variable-coherence optics
TL;DR: In this paper, the concept of propagation invariance in partially coherent optics is introduced and explicit expressions for the cross-spectral density and the angular correlation function (crossangular spectrum) characterizing a class of fields that are propagation invariant in the sense that their correlation properties in the space-frequency domain are exactly the same in every transverse plane.